RANKING · 2010 CENSUS · 88 SHOWN OF 88

Oldest by median age, Ohio counties · 2010

Ohio counties ranked by median age of residents (2010 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is 39.9.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Noble County, OHOH14,27648.6+37%

02Ottawa County, OHOH39,48146.3+13%

03Monroe County, OHOH12,99444.7+10%

04Harrison County, OHOH14,07044.4+8%

05Jefferson County, OHOH63,59743.9+6%

06Belmont County, OHOH64,43443.4+6%

07Erie County, OHOH73,29643.4+10%

08Geauga County, OHOH95,67643.3+12%

09Carroll County, OHOH26,47543.1+11%

10Washington County, OHOH58,38943.0+10%

11Mahoning County, OHOH224,70642.9+8%

12Trumbull County, OHOH198,97242.8+10%

13Morgan County, OHOH13,62642.4+9%

14Columbiana County, OHOH99,37742.3+10%

15Lake County, OHOH232,21742.3+10%

16Crawford County, OHOH41,89641.9+10%

17Meigs County, OHOH21,58741.2+7%

18Stark County, OHOH373,77141.1+8%

19Ashtabula County, OHOH96,71341.0+9%

20Guernsey County, OHOH38,37940.9+8%

21Hocking County, OHOH27,51240.9+8%

22Preble County, OHOH40,66440.9+9%

23Richland County, OHOH124,89340.9+8%

24Tuscarawas County, OHOH92,37340.9+8%

25Coshocton County, OHOH37,18840.8+8%

26Darke County, OHOH51,52040.8+9%

27Williams County, OHOH36,54940.7+10%

28Miami County, OHOH112,63440.6+8%

29Clark County, OHOH135,34040.5+8%

30Wyandot County, OHOH21,56740.5+8%

31Medina County, OHOH185,02540.4+10%

32Sandusky County, OHOH58,65540.4+8%

33Van Wert County, OHOH29,01340.3+7%

34Cuyahoga County, OHOH1,232,92540.2+8%

35Lawrence County, OHOH55,71040.1+7%

36Auglaize County, OHOH45,90940.0+10%

37Lorain County, OHOH323,21940.0+10%

38Paulding County, OHOH18,72740.0+10%

39Summit County, OHOH538,37640.0+8%

40Brown County, OHOH44,39739.9+13%

41Fulton County, OHOH41,85339.9+11%

42Gallia County, OHOH29,07239.9+7%

43Marion County, OHOH65,11539.9+7%

44Logan County, OHOH46,30239.9+8%

45Henry County, OHOH27,59839.8+9%

46Ross County, OHOH76,42939.8+8%

47Champaign County, OHOH38,82039.7+7%

48Adams County, OHOH27,86539.6+9%

49Vinton County, OHOH12,64539.6+12%

50Morrow County, OHOH36,30539.5+8%

51Muskingum County, OHOH87,01439.5+8%

52Defiance County, OHOH38,29239.4+8%

53Fayette County, OHOH28,55239.4+5%

54Mercer County, OHOH42,73739.4+10%

55Ashland County, OHOH52,52339.3+8%

56Highland County, OHOH43,82339.2+9%

57Montgomery County, OHOH539,59839.2+8%

58Pike County, OHOH27,06139.2+11%

59Madison County, OHOH46,98539.1+9%

60Licking County, OHOH185,56439.1+7%

61Jackson County, OHOH32,81739.0+7%

62Putnam County, OHOH34,38039.0+11%

63Scioto County, OHOH71,36538.8+6%

64Seneca County, OHOH54,52238.8+7%

65Clinton County, OHOH42,30138.7+10%

66Perry County, OHOH35,91838.6+10%

67Clermont County, OHOH216,97738.5+11%

68Hancock County, OHOH75,03438.5+7%

69Pickaway County, OHOH62,97838.5+7%

70Huron County, OHOH58,25038.4+10%

71Allen County, OHOH100,88138.3+6%

72Knox County, OHOH64,00238.3+5%

73Wayne County, OHOH116,75838.3+8%

74Fairfield County, OHOH169,75238.2+6%

75Shelby County, OHOH48,06537.9+9%

76Warren County, OHOH257,18137.8+7%

77Delaware County, OHOH242,03237.4+6%

78Portage County, OHOH163,40437.4+9%

79Greene County, OHOH174,32237.2+4%

80Hamilton County, OHOH838,41837.1+5%

81Lucas County, OHOH423,34737.0+6%

82Union County, OHOH73,44636.4+6%

83Butler County, OHOH400,12836.0+5%

84Wood County, OHOH134,17635.3+8%

85Hardin County, OHOH30,07234.7+4%

86Franklin County, OHOH1,361,53633.4+3%

87Holmes County, OHOH44,97029.7+6%

88Athens County, OHOH63,19726.3+2%

SHOWING 1–88 OF 88

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS